MIcrochip PIC32 32位RISC MCU开发方案

发布时间：2011-12-23 10:34 发布者：1046235000

MIcrochip公司的PIC32系列是高性能通用和USB的闪存微控制器,其中的32位RISCCPU采用5级流水线的MIPS M4K 32位内核,CPU最大工作频率80MHz,具有1.56 DMIPS/MHz (Dhrystone 2.1),而MCU工作电压2.3V-3.6V,32KB-512KB闪存(另加12KB引导闪存)以及8K-32K SRAM存储器.器件具有丰富外设和模拟特性,主要用在消费类电子,工业,医疗电子和汽车电子.本文介绍了PIC32 MCU主要特性,方框图,以及PIC32 MCU入门开发套件主要特性,方框图,电路图和材料厂清单.

Microchip’s 32-bit portfolio with the MIPS® M4K® offers high performance microcontrollers, and all the tools needed to develop your embedded project. With free software, low cost development tools, and pin/peripheral compatibility from 16-bit product lines, PIC32 MCUs shorten time to market and allow your designs to grow. PIC32 gives your application the processing power, memory and peripherals your design needs!

PIC32 MCU主要特性:

High-Performance 32-bit RISC CPU:

• MIPS32® M4K® 32-bit core with 5-stage pipeline

• 80 MHz maximum frequency

• 1.56 DMIPS/MHz (Dhrystone 2.1) performance at 0 wait state Flash access

• Single-cycle multiply and high-performance divide unit

• MIPS16e® mode for up to 40% smaller code size

• Two sets of 32 core register files (32-bit) to reduce interrupt latency

• Prefetch Cache module to speed execution from Flash

Microcontroller Features:

• Operating temperature range of -40ºC to +105ºC

• Operating voltage range of 2.3V to 3.6V

• 32K to 512K Flash memory (plus an additional 12 KB of boot Flash)

• 8K to 32K SRAM memory

• Pin-compatible with most PIC24/dsPIC® DSC devices

• Multiple power management modes

• Multiple interrupt vectors with individually programmable priority

• Fail-Safe Clock Monitor Mode

• Configurable Watchdog Timer with on-chip Low-Power RC Oscillator for reliable operation

Peripheral Features:

• Atomic SET, CLEAR and INVERT operation on select peripheral registers

• Up to 4-channel hardware DMA with automatic data size detection

• USB 2.0-compliant full-speed device and On-The-Go (OTG) controller

• USB has a dedicated DMA channel

• 3 MHz to 25 MHz crystal oscillator

• Internal 8 MHz and 32 kHz oscillators

• Separate PLLs for CPU and USB clocks

• Two I2C™ modules

• Two UART modules with:

- RS-232, RS-485 and LIN support

- IrDA® with on-chip hardware encoder and decoder

• Up to two SPI modules

• Parallel Master and Slave Port (PMP/PSP) with 8-bit and 16-bit data and up to 16 address lines

• Hardware Real-Time Clock and Calendar (RTCC)

• Five 16-bit Timers/Counters (two 16-bit pairs combine to create two 32-bit timers)

• Five capture inputs

• Five compare/PWM outputs

• Five external interrupt pins

• High-Speed I/O pins capable of toggling at up to 80 MHz

• High-current sink/source (18 mA/18 mA) on all I/O pins

• Configurable open-drain output on digital I/O pins

Debug Features:

• Two programming and debugging Interfaces:

- 2-wire interface with unintrusive access and real-time data exchange with application

- 4-wire MIPS® standard enhanced JTAG interface

• Unintrusive hardware-based instruction trace

• IEEE Standard 1149.2-compatible (JTAG) boundary scan

Analog Features:

• Up to 16-channel 10-bit Analog-to-Digital Converter:

- 1000 ksps conversion rate

- Conversion available during Sleep, Idle

• Two Analog Comparators

PIC32 MCU主要应用:

These new MCUs include a host of additional useful features that make them suitable for applications in the consumer, industrial, medical and automotive markets.

图1.PIC32 MCU方框图

PIC32 MCU入门开发套件

PIC32 Starter Kit provides a low-cost, modular development system for Microchip’s line of 32-bit microcontrollers (MCUs).

The starter kit comes preloaded with demonstration software for the user to explore the new features of the PIC32. It is also expandable through a modular expansion interface, which allows the user to extend its functionality. The starter kit also supplies on-board circuitry for full debug and programming capabilities.

The PIC32 Starter Kit contains the following items:

• PIC32 Starter Kit Board

• USB Mini-B cable

图2.PIC32 MCU入门开发套件外形图

PIC32 MCU入门开发套件主要特性:

The board includes these key features, as indicated in the diagram:

1. PIC32MX360F512L 32-bit microcontroller.

2. Green power indicator LED.

3. Regulated +3.3V power supply for powering the starter kit board via USB or expansion board.

4. On-board crystal for precision microcontroller clocking (8 MHz).

5. USB connectivity for on-board debugger communications.

6. PIC18LF4550 USB microcontroller for on-board debugging.

7. Orange Debug indicator LED.

8. Three push-button switches for user-defined inputs.

9. Three user-defined indicator LEDs.

10. Connector for connecting various expansion boards (on the underside of board).